Connecticut Weather: Winter Storm Warning Issued For Heavy Snow

The National Weather Service has just changed a Winter Storm Watch to a Winter Storm Warning for all of Connecticut as parts of the state could end up with nine inches of snow by 6 a.m. Sunday. One other big change to the forecast is that the snow is now expected to start sooner than initially thought. Snow will enter the western part of the state around 5 p.m. and it should be snowing everywhere by 7 p.m.

The Winter Storm Warning for Southern Connecticut is in effect from 5 p.m. to 7 a.m. Sunday where heavy snow is forecast and between five and nine inches of snow is possible.

For Hartford, Tolland and Litchfield counties the storm warning is from 7 p.m. tonight to 7 a.m. Sunday. Five to eight inches of snow is expected here. There could be snowfall rates of 1 to 2 inches per hour at times during this fast-moving storm.

See related: Hour-by-Hour look at this Saturday night CT snowstorm

FOX 61 Weather‏ said, "The cold air is starting to set up - big temp change over the last 24 hours. We are going to be hovering around the freezing mark until after sunrise, and likely close to freezing during the event. Big thump of snow likely to produce most of the snowfall."

And once this snow ends a major warmup will occur but long-range forecasts are showing a snowy March.

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Here is the updated weather forecast for Southern Connecticut

Today: Increasing clouds, with a high near 36. Wind chill values between 25 and 30. Light and variable wind becoming southeast 5 to 10 mph in the morning.

Tonight: Snow, mainly before 5am. Low around 31. Southeast wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 46. Wind chill values between 25 and 35 early. West wind 6 to 9 mph.

Sunday Night: Mostly clear, with a low around 29. Light and variable wind.

Washington's Birthday: A 40 percent chance of rain, mainly after 2pm. Increasing clouds, with a high near 47. Calm wind becoming south 5 to 8 mph in the morning.

Monday Night: Rain likely, mainly before 11pm. Cloudy, with a low around 43. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Here is the updated weather forecast for Northern Connecticut

Today: Increasing clouds, with a high near 38. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Tonight: Snow, mainly between 9pm and 4am. Low around 29. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 43. Northwest wind 5 to 8 mph, with gusts as high as 28 mph.

Sunday Night: Mostly clear, with a low around 25. Light and variable wind.

Washington's Birthday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 47. South wind 3 to 7 mph. Chance of precipitation is 40%.

Monday Night: Showers likely, mainly before 10pm. Cloudy, with a low around 43. Chance of precipitation is 60%.